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Home >> Toyota >> 2021 >> C-HR LE >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter / Gauge / Display - Diagnostic Codes & Symptom Tests >> Meter / Gauge System >> DTC B1507: Open in Turn Signal Circuit; DTC B1508: Short in Turn Signal / Hazard Flasher Circuit [02/2017 - 10/2017] >> Procedure

DTC B1507: Open in Turn Signal Circuit; DTC B1508: Short in Turn Signal / Hazard Flasher Circuit [02/2017 - 10/2017]: Procedure

  1. INSPECT LIGHTS 
    1. Inspect the illumination of each turn signal light.

      Result

      Result Proceed to
      RH side turn signal light does not illuminate. A
      LH side turn signal light does not illuminate. B

    Result: 

    B 

    See step  6

    Result: 

    A 

    See step  2

  2. CHECK TURN SIGNAL LIGHTS (RH SIDE) 
    1. Turn the ignition switch ON.
    2. Set the headlight dimmer switch assembly to the right turn switch position.
    3. Check the operation of the turn signal lights (RH side).

      Result

      Result Proceed to
      Front turn signal light assembly (RH side) does not blink. A
      Side turn signal light assembly (RH side) does not blink. B
      Rear turn signal light assembly (RH side) does not blink. C

    Result: 

    B 

    See step  4

    Result: 

    C 

    See step  5

    Result: 

    A 

    See step  3

  3. CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY RH - COMBINATION METER ASSEMBLY OR BODY GROUND) 
    1. Disconnect the A29 headlight assembly RH connector.
    2. Disconnect the F5 combination meter assembly connector.
    3. Measure the resistance according to the value(s) in the chart below.

      Standard Resistance (Check for Open)

      Tester Connection Condition Specified Condition
      A29-4 (B) - F5-7 (LR) Always Below 1 Ω
      A29-6 (E) - Body ground Always Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      A29-4 (B) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [02/2017 - 08/2020] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  4. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - OUTER REAR VIEW MIRROR ASSEMBLY RH) 
    1. Disconnect the F5 combination meter assembly connector.
    2. Disconnect the I8 outer rear view mirror assembly RH connector.
    3. Measure the resistance according to the value(s) in the chart below.

      Standard Resistance (Check for Open)

      Tester Connection Condition Specified Condition
      F5-7 (LR) - I8-1 (B) Always Below 1 Ω
      I8-2 (E) - Body ground Always Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      I8-1 (B) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [02/2017 - 08/2020] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  5. CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT ASSEMBLY RH - COMBINATION METER ASSEMBLY OR BODY GROUND) 
    1. Disconnect the M47 rear combination light assembly RH connector.
    2. Disconnect the F5 combination meter assembly connector.
    3. Measure the resistance according to the value(s) in the chart below.

      Standard Resistance (Check for Open)

      Tester Connection Condition Specified Condition
      M47-4 (TRN) - F5-5 (TRNR) Always Below 1 Ω
      M47-3 (E) - Body ground Always Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      M47-4 (TRN) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [02/2017 - 08/2020] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  6. CHECK TURN SIGNAL LIGHTS (LH SIDE) 
    1. Turn the ignition switch ON.
    2. Set the headlight dimmer switch assembly to the left turn switch position.
    3. Check the operation of the turn signal lights (LH side).

      Result

      Result Proceed to
      Front turn signal light assembly (RH side) does not blink. A
      Side turn signal light assembly (LH side) does not blink. B
      Rear turn signal light assembly (LH side) does not blink. C

    Result: 

    B 

    See step  8

    Result: 

    C 

    See step  9

    Result: 

    A 

    See step  7

  7. CHECK HARNESS AND CONNECTOR (HEADLIGHT ASSEMBLY LH - COMBINATION METER ASSEMBLY OR BODY GROUND) 
    1. Disconnect the A11 headlight assembly LH connector.
    2. Disconnect the F5 combination meter assembly connector.
    3. Measure the resistance according to the value(s) in the chart below.

      Standard Resistance (Check for Open)

      Tester Connection Condition Specified Condition
      A11-4 (B) - F5-13 (LL) Always Below 1 Ω
      A11-6 (E) - Body ground Always Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      A11-4 (B) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [02/2017 - 08/2020] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  8. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - OUTER REAR VIEW MIRROR ASSEMBLY LH OR BODY GROUND) 
    1. Disconnect the F5 combination meter assembly connector.
    2. Disconnect the J7 outer rear view mirror assembly LH connector.
    3. Measure the resistance according to the value(s) in the chart below.

      Standard Resistance (Check for Open)

      Tester Connection Condition Specified Condition
      J7-1 (B) - F5-13 (LL) Always Below 1 Ω
      J7-2 (E) - Body ground Always Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      J7-1 (B) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [02/2017 - 08/2020] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  9. CHECK HARNESS AND CONNECTOR (REAR COMBINATION LIGHT ASSEMBLY LH - COMBINATION METER ASSEMBLY OR BODY GROUND) 
    1. Disconnect the M48 rear combination light assembly LH connector.
    2. Disconnect the F5 combination meter assembly connector.
    3. Measure the resistance according to the value(s) in the chart below.

      Standard Resistance (Check for Open)

      Tester Connection Condition Specified Condition
      F5-6 (TRNL) - M48-4 (TRN) Always Below 1 Ω
      M48-3 (E) - Body ground Always Below 1 Ω

      Standard Resistance (Check for Short)

      Tester Connection Condition Specified Condition
      M48-4 (TRN) - Body ground Always 10 kΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [02/2017 - 08/2020] 

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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